Emery-wheel-dressing tool



G. R BRISBEN.

I EMERY WHEEL DRESSING TOOL. APPLICATION FILED DECAY, 1920.

Patented Aug. 15, 1922.

2 SHEETSSHEET 1,

e. R. BRISBEN. EMERY WHEEL DRESSING TOOL.

PLICATION FILED DEC-H 1920.

llliallllll Patented Aug. 1551922. I

2 SH, EEEEEEEEEE 2- H .15 31 awuwvwoz State of of its objects to Application To all whom it may concern: -Be it known that l, GEORGE citizen of the United States, Cleveland, in the county of Cuyahoga and Ohio, have invented certain new and useful Improvements in Emery-VVheel- Dressing Tools, of which the following is a specification.

This invention relates to tools for dress-Q emery grinding wheels and has as one provide a tool having a cutter, the cutting edges of which possess such characteristics of form as toprovide for a chipping of the surface of the wheel and a subsequent smoothing or iinishing thereof in the same operation so" that the grinding wheel-may be dressed in an efiicient and expeditious manner by the use a single tool.

ing

of the tool that it may be most conveniently held in position to actupon the face of the wheel to be dressed and will not be liable to become caught or jammed while in use.

The invention also has as its general objects to provide a dressing tool which is simple and durable in construction, compact in form, and highly eflicient in its operation ofdressing the face of the wheel.

In the accompanying drawings: Figure 1 is a top plan view of embodying the present invention;

Figure 2 is a side elevation thereof; Figure 3 is a detail vertical transverse sectional view on the line 33 of Figure 2;

igure 4: is a sectional view on the line of Figure 3 looking in the direction of the tool the cutter or chipper of the tool;

i 6-6 of Figure5 Figure 5 is a side chipper elements;

igure 6 1s a elevation of one of the looking in the direction indicated by the arrows;

Figure 7 is a detail perspective view of one of the end disks of the chipper assemblage. Figure 8 is a diagrammatic view illustrating the layout of the periphery of one of the chipping members. a

The tool embodying the present invention comprises a chipper assemblageand a holder in which the same is mounted, and in the drawings the numeral lindicates in general the holder which comprises a' handle 2 formed or provided at its forward end with a head indicated in general by the numeral 3. The said head 3 is in the form of a yoke Specification of Letters Patent.

' away.

sectionalview on the line GEORGE BRISBEN, OF CLEVELAND, OHIO.

and comprises a transverse portion 4 which is connected with the handle, and-spaced side portions which are indicated by thenumeral 5. The side portions 5 are provided with bosses 6 having the chipper assemblage is rota-tably mounted as will be presentlypointed out and the lower sides of the members 5, indicated specifically by the numeral 8; are inclined bearing openings 7 to receive the ends of the spindle upon WhlClI- of the drawings from Patented Augg15,19223, i filed December 11,1920. Seriallblo. 429,901.

grinding wheelin the use of the-tool. At 3 this point it is to be noted that when the edges .8 of the said portions 5 are disposed to rest upon the stationary rest of the wheel the head of the tool holder will be so posi- The chipper assemblage best illustrated usive and will now be in Figures 3 to 7 incl specifically described.

'The chipper assemblage heretofore referred to comprises a plurality of chipping is dressed'andits face is chipped members certain of which'are indicated by the numeral 10 andanother by the numeral 10 the members 10 being of counterpart form and the member 10? being somewhat differently formed as will presently be more specifically explained. Generally speaking each of the chipping members comprises a disk-like-body 11 provided with an opening 12 concentric to the periphery of the member as a whole. ping members 10 and 10% the body 11 of each is formed upon one facefat points equ i distantly spaced about the opening 12, with laterally projecting lugs indicated by the numeral 13 of approximately the same height as the thickness of said body 11. Likewise the body ll of eachof the 10 is formed at spaced intervals about the wall ofthe opening 12 with perforations or recesses 14 which alternate with the lugs 13 and which recesses and lugs are of corre sponding contour, the recesses being of slightly greater dimensions than the lugs. The member lOTis not formed with the recesses l i-or their equivalents but on the other In the case of all of the Chip i members the lugs 18 and 10 being located at one end corresponding member having recesses 45 seating 55 21, and after 60 terlocked in the 65 in the head of hand is provided upon its face opposite the face upon which the lugs 18 are located, with other correspondingly shaped lugs indicated by the numeral 15 which may alternate with which are similarly equiabout the Opening 12. There may be any desired number of the members 10 employed in an assemblage of the chippers, and in assembling the members distantly spaced 10 they are disposed side by side in such a manner that the lugs 18 of the members 10 and 10 will seat or engage in the recesses 14: in adjacent members as clearly shown in Figure 8 of the drawings, one of the members i of the series and located at the oppo- 18 of the speciii- 10 will project at i is no 1 1 to receive these lugs, and likewise while the lugs 18 of the member 10 will be received in the recesses 14: ofthe, next adjacent member 10, the lugs 15 of this member l0 will the member 10 being site end. Thus'the lugs cally mentioned member one end of the assemblage as there project at the other end of the assemblage.

As a part of means provided for holding the members assembled, end disks 15, one of which is clearly shown in Figure 7 of the drawings, are provided. and these disks are arranged at the opposite ends of the assemblage and each is formed with a'central opening 17 and in the wall of the opening with recesses 18 which areequi-distantly spaced about the Wall. Returning to a consideration of Figures8 and 6 of the draw ings, it will be observed that the peripheral portions of the members 10 and 10 are broaler than their central or body portions 11 so that in effect depressions 1.9 are pro vided in the opposite faces of each member,

and in the depression in the outer face of the member 10 which is located at one end of theassemblage, is received the respective end disk 16, the lugs 18 of this member 10 within the recesses 18 in the said disk. Likewise the other disk 16 is re ceived within the recesses face of the member 10, the lugs member seating within the recesses 18 of the respective disk.

In assembling the members 10 and 10 and the end disks 16, these parts are fitted onto a sleeve 20 one end of which has been previously flanged, as indicated by the numeral the said parts have been positioned upon the sleeve the other end of the sleeve is overturned or flanged, as at 22, so as to permanently secure the parts in their assembled relation, they being mutually inmanner above explained. After the parts have been thus assembled, bearing bushings are permanently fitted into the opposite ends of the sleeve 20, and the assemblage is then ready for mounting the holder. With this end in 24 is fitted through the bores of the bushings 28 as best shown in Figure 8 of the drawings, and the ends oi this spindle are seated in the openings 7 formed in the bosses 8 heretofore described. The said ends of the spindle are circuinferentially reduced as indicated by the numeral 25, and set screws 28 are threaded downwardly through the outer ends of the bosses 6 and have conical lower ends 27 which seat within the reduced portions''% of the spindle ends, the spindle being in this manner secured in place both against longitudinal dis placement and against rotation.

Referring to the drawings it will be observed that the peripheral porions of, the chipping members,

view a spindle which portions are indicated in general by the numeral 28, are formed with radial flutes 9/9, and referring more particularly to Figures 1 and 8 of the drawings, it will be observed that theilutes 29 are so formed that the chipping periphery of each member will comprise successive portions and 31 which are relatively extended along lines defining angles and curves. Stated in broader terms, the chipping periphery of each member comprises successive portions which are of non-similar linear contour. v l'ore specifically speaking each portion 80 of the periphery of each chipping member comprises straigl'it line portions extending at angles to each other, and on the other hand each portion 81 has a linear contour of a compound curve such for example as a cyma curve. The object in view in forming the chipping peripheries of the members with successive portions having different contours isto provide for a more perfect dressing of the face of the grinding wheel acted upon by the tool. Thus the an gular portions 80 will relatively roughly chip the face of the wheel along certain lines, and the portions 81 will act upon this face along other lines which. however being curved instead of angular, result in a relatively smooth dressing of the face.

The invention also contemplates the provision of aguard for the cutter of the tool, and this guard is indicated in general by the numeral 82 and the same comprises a plate 88 pivotally mounted at its rear end upon a pin 84: seated at its ends in lugs 85 upon the forward end of the handle 2 at the upper side thereof. The forward portion of the plate may be widened as indicated by the numeral 88 and, in one position of the guard, extends forwardly and upwardly at an angle over the upper and rear side of the cutter, the said plate being provided with a weighted portion 87 upon its upper side whereby it will normally be held in the position. stated, although the plate maybe swung rearwardly upon its pivot 84 so as to lie upon the outer sidefof the handle and out of coactive relation to the cutter.

Having thus described the invention, What is claimed as new is:

1. A cutter element for an emery Wheel dressing tool having a chipping edge, successive portions of which include angles and curves.

2. A cutter element for an emery Wheel dressing tool having a continuous chipping edge, a portion of which is of rectilinear and angular contour and another portion of which is of curvilinear contour.

3. A cutter element for an emery Wheel dressing tool having its peripheral portion fluted, successive pairs of the flutes being respectively of rectilinear and curvilinear contour.

4. A cutter for an emery Wheel dressing tool comprising an assemblage of cutter elements, each of said elements having lateral locking lugs and perforations through the body of each of said elements to receive the lugs in adjacent elements, whereby mutual interlocking of'said elements is elfected.

' through the 5. A cutter for an emery Wheel'dressing tool comprising an assemblage of cutter elements, each of said elements having lateral locking lugs and perforations through the body of each of said elements to receive the lugs in adjacent elements, whereby mutual interlocking of said elements is effected,

said lugs being situated on one side of each" element.

6. A cutter for emery wheel dressing tools comprising a rotatable element, end disks thereon, cutter elements assembled side by side between said disks, and said central aperture-for said rotatable element and With equally spaced perforations body of each disk and cutter element extending radially from said aperture; said cutter elements having lateral lugs on one side thereof adapted to engage said perforations.

e In testimony whereof I afliX my signature. GEORGE R. BRISBEN. 1 8.

said cutter elements disks each being provided With a With 

